Rotary indicating device



Sept. 23, 1941.

J.H. PREssLY- ROTARY INDICATVING DEVICE Filed July 25, 1939 Patented Sept. 23, 194i VV.2,257,022 l' RO TARY INDICATI-NG yIJ'ElVllGEA Jfksolt l, I eSSer, 1 liflalfmn,V Ind-Q assigner, by

mesne assignments, to.Philco Radio and TelevisionCorporatiqn,Philadelphia, Pa., a corporation. ;.f. Delaware Appueatinmiyzs, 193e, seraiNo. 286,486

' sjclaims. @1.116%129)Y This inventionA relates to a novel rotar-y indicating device particularly adapted for use as-a tuning indicatorfor a radio receiver. y A specific example of such use is disclosed inthe copending -application of J ayrE. Barth, Serial No. 286,490 iled. July 25, 1939.

The principal object of the invention is to provide in such a device a simple indicia tab holder which maybe formed economically by a simple manufacturing process.

Another object of the invention is to provide in such a device a novel indicia tab holderof integral form which may be constructed in a simple manner by molding, as described further hereinafter.

A further object of the invention is to provide in such av device an indicia. tab holder constructed so as to readily and removably receive Va plurality of indiciatabs, and adaptedto provide such protection for the tabs that they are subjected to substantially nowear or deterioration.

Still another object of theinvention is to provide in such. a device an indicia tab holder comprising` an integral body of transparent material novelly constructed to. provide peripheral tabholding, means and radially reinforcing ribs dividing said body into sectors, each accommodating one of the indicia tabs.

A still-further object of the inventionis to provide in such a device van indicia tab holder of this character having a peripheral dual wall structure dening slots for receiving the `indicia tabs.

c Other objects and features of l the invention will/appear hereinafter. l

Fig. 1 is a perspective View. ofthe indicia tab holder having a portion thereof cut away for the sake of-illustration;

Fig. 2 is a plan view of the device;

Fig. 3 is a bottom view of the same;

Figi, 4 is a sectional ViewY taken along line 4.- of Fig. 2;

Fig. 5 is a sectional View taken along line 5 5 of Fig. 2; and,

Fig. 6 is an arcuate sectional view taken just inside the outer peripheral wall between the lines 6 6 of Fig. 2.

Referring to the several views of the drawing, the indicia tab holder is formed as an integral unit of any suitable transparent material. Preferably, the device is formed of Inoldable transparent material by pouring such material into a metal mold, and, if necessary, subjecting it to pressure, thus forming the complete unit in one operation. Any of the known transparent moldthermoplastic moldable materials made from cel'- lulose acetate. Y Y' The device comprises a pair of concentric peripheral walls I and 21 whicharespaced in p close relation tooneanother. Aty circumferential spaced points these walls arejoinedbypartition-l ing portions 3 which divide the. space'M between the walls into slots 41 for-receiving the-indicia tabs, one of whichl is shown vat 5'. Intermediate the partitions 3, the outer. wall is lprovided with small recesses 6` to facilitateremoval of. the indicia; tabs. At. the lower end of each partition--y ing portion 3, thereare.provided.tab-seatingA por-v tions?. and (see Fig. 6) whichextend arcuately from. eachsideof. thepartitioning portion 3%; as illustrated. This. decreases the. length of the slots It. at the lower portion of; the devicecompared` to the length of the. slots. at. the upper part of the device, as rnaybeseen by comparison of Figs. 2 andr 3. Thus, when` an. indicia tab is inserted in one of the slots4.from the upper side of the device, it rests uponthetab-seating portions at, the bottomofthe slot, asshown in Fig. 6.

A transverse web. 9 at the top of the structure is joined to the inner wall l, as may be. clearly seen in Fig. l. This web is preferably. depressed, las shown at I0, andthe central` dee. pressed portion has a, central opening H (Figs.-v

Ll and, 5)v therein and carries anapertured metal` insert l2. Thevpurp'ose of this is to accornmm-l date` means for rotatably supporting theindicia tab holder. As illustrated, such-meansmay come prise a metal support ligextending through the opening lil and afXedgtO-the insert l2..

The central depressedportion g of web 9' forms a sort ofhub land there. lare provided: radial reinforcing ribs or webs lextending. froml por. tion I5 to the partitioning portions 3 andinteg-y rally joined to such portions and to the Web'9. These ribs serve to rigidify, and'. strengthen the structure andtheydivide. the same into sectors, each serving` tohold an indicia tabias above.de. scribed. In the specific device illustrated, there are six sectors and the device will accommodate six indicia tabs, but it will be understood that any desired number, within the dimensional limitations in any instance, may be employed.

As mentioned above, the device has several important advantages. It may be manufactured simply and economically by a single molding process involving simply the pouring of the molten material into a suitable mold and subjecting the material to the necessary pressure. The

able materials may be employed, such as the indicia tabs may be easily inserted and removed and they may be formed of relatively stiff m'aterial capable of slight curvature to conform to the arcuate shape of the slots. When the tabs are inserted in the holder, they are protected by the dual wall structure and, therefore, retain 'f their usefulness over a long period of time. Further, the integral structure is strong and rigid and, if formed of material such as above mentioned, the device is practi-cally unbreakable.

While a specific form of the index tab holder has been illustrated and described for the purpose of disclosure, it will be apparent that the device is capable of modification without departing from the scope of the invention, as defined in the appended claims.

I claim:

1. An indicia tab holder, comprising a molded one-piece transparent body having closely spaced concentric walls about the peripheral portion of the body, spaced partitioning portions between said walls dividing the said wall structure into a plurality of sections with the walls of each section defining an open slot for removably receiving an indicia tab, and radial reinforcing ribs extending to said partitioning portions and dividing the body into sectors each accommodating an indicia tab, as aforesaid.

2. An indicia' tab holder, comprising a molded one-piece transparent body having closely spaced concentric walls about the peripheral portion of the body, spaced partitioning portions between said walls dividing the said `wall structure into a plurality of sections, the walls of each section defining an open slot for removably receiving an indicia, tab, a web joined to the top of the inner wall sections and said partitioning portions, radial reinforcing ribs joined to said web and said partitioning portions and dividing the body into sectors each accommodating an indicia tab as aforesaid, and means attached to said web for supporting the holder.

3. A rotary indicating device, comprising a molded one-piece body including an outer cylindrical transparent wall, an inner cylindrical wall in closely spaced relation to said outer wall, a plurality of partitioning and wall-joining elements extending between said walls at circumferentially spaced points and integrally joining the walls to maintain them in relatively fixed relation, said walls forming cooperatively a plurality of narrow arcuate open-end slots extending circumferentially between successive partitioning elements, said slots being adapted to removably receive thin indicia tabs inserted in the open end of said slots, tab-seating elements integral with the Walls at the opposite ends of said slots, an axial support member, and means permanently attaching the-said Wall structure to said support member.

4. A rotary indicating device, comprising a molded one-piece body including an outer cylindrical transparent wall, an inner cylindrical Wall in closely spaced relation to said outer wall, a

plurality of partitioning and wall-joining elements extending between said walls at circumferentially spaced points and integrally joining the walls to maintain them in relatively fixed'relation, said walls forming cooperatively a plurality of narrow arcuate open-end slots extending circumferentially between successive partitioning elements, said slots being adapted to removably receive thin indicia tabs, a hub disposed centrally of said body, means integrally securing the said wall structure to said hub, and an axial support member secured to said hub.

5. A drum-like rotary indicator device, comprising a molded one-piece transparent body including a pair of concentric vertical walls permanently secured to one another in closely spaced relation, the said wall structure being of greater diameter than depth, said walls forming narrow vertical slots open at the top thereof to removably receive indicia tabs, a web integral with the top edge of the inner wall and closing the top of said device, and a Support member secured to the central part of said web and extending axially downward through said device.

6. A drum-like rotary indicator device, comprising a molded onepiece transparent body including a pair of concentric vertical walls permanently secured to one another in closely spaced relation, the said wall structure being of greater diameter than depth, said walls forming narrow vertical slots open at the top thereof to removably receive indicia tabs, a web integral with the top edge of the inner wall and closing the top of said device,'said web having a central depressed portion, a plurality of radial reinforcing ribs extending from said central portion to said inner wall and integrally joined to said web and the inner Wall, and a support member secured to the central part of said web and extending axially downward through said device.

7. As an article of manufacture, an indicia tab holder for a rotary indicating device, comprising a molded one-piece transparent body including closely spaced inner and outer peripheral walls, spaced partitioning portions extending between and integrally joined to said walls and dividing the dual wall structure into a plurality of sections, the walls of each section defining an open slot for removably receiving an indicia tab, and a supporting portion integrally joined to the inner wall and extending within the confines of the wall structure.

8. An indicia tab holder, comprising a molded one-piece transparent drum of relatively large diameter compared to its axial dimension and having closely spaced concentric peripheral Walls, spaced partitioning portions between said walls, the walls and partitioning portions defining open slots for removably receiving indicia tabs, and a supporting and rigidifying structure Within said walls and joined thereto.

JACKSON H. PRESSLEY. 

